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Total Questions : 1535 | Page 150 of 154 pages
Question 1491. 2. A big advantage of surface hardening by nitriding process is that
  1.    It is a mass production process
  2.    It is simple and cheap
  3.    Parts need not be quenched
  4.    It does not require furnace
 Discuss Question
Answer: Option C. -> Parts need not be quenched
Question 1492. 1. In normalising process, the hypoeutectoid steel is
  1.    Heated above A3 line and cooled very slowly in furnace so as to refine old structure
  2.    Heated below A1 line with a view to make steel ductile for cold working
  3.    Heated below A1 line and cooled slowly with a view to remove internal stresses
  4.    Heated above A3 line and cooled in air resulting in slight hardening
 Discuss Question
Answer: Option C. -> Heated below A1 line and cooled slowly with a view to remove internal stresses
Question 1493. 7. Hardness of ferrite is of the order of
  1.    10 BHN
  2.    20 BHN
  3.    35 BHN
  4.    50 BHN
 Discuss Question
Answer: Option D. -> 50 BHN
Question 1494. 9. Polymerisation is associated with
  1.    Stainless steel
  2.    Cast iron
  3.    Aluminium
  4.    Thermoplastic plastic
 Discuss Question
Answer: Option D. -> Thermoplastic plastic
Question 1495. 2. In structure, all metals are
  1.    Crystalline
  2.    Granular
  3.    Wrought
  4.    Amorphous
 Discuss Question
Answer: Option B. -> Granular
Question 1496. 0. The most notable precipitation hardenable alloys are those in which the base metal is
  1.    Copper
  2.    Nickel
  3.    Manganese
  4.    Aluminium
 Discuss Question
Answer: Option B. -> Nickel
Question 1497. 1. In order for an alloy system to be capable of precipitation hardening it is essential that the equilibrium diagram shows a decreasing solubility of one component in another
  1.    Constant temperature
  2.    With decreasing temperature
  3.    With increasing temperature
  4.    Below room temperature
 Discuss Question
Answer: Option A. -> Constant temperature
Question 1498. 8. Hardness of cementite is of the order of
  1.    100 BHN
  2.    600 BHN
  3.    1100 BHN
  4.    1400 BHN
 Discuss Question
Answer: Option D. -> 1400 BHN
Question 1499. 3. Which of the following is non-destructive test
  1.    Tensile test
  2.    Radiography test
  3.    Charpy test
  4.    Cupping test
 Discuss Question
Answer: Option B. -> Radiography test
Question 1500. 4. High ratios of surface to mass tend to
  1.    Produce smaller depths of hardening
  2.    Produce greater depths of hardening
  3.    Have no effect on depth of hardening
  4.    Have unpredictability about depth of hardening
 Discuss Question
Answer: Option D. -> Have unpredictability about depth of hardening

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